Authorities have launched an ocean clean-up operation after an oil pipeline explosion and fire spilled 1,500 tonnes of crude into the Yellow Sea.Dozens of oil-skimming vessels and other ships were working to remove the oil from the sea off the northeastern port city of Dalian following Friday night's accident. Authorities predicted the clean-up would take 10 days. Chinese media reports suggested oil had stopped spilling into the sea but did not explicitly say it had been contained. Two pipelines exploded at an oil storage depot belonging to China National Petroleum Corp near Dalian's Xingang Harbour in Liaoning province, triggering a spectacular blaze that burned throughout the weekend. CNPC is the country's biggest oil company.
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